Speaker



FIG. 1 is a front perspective view of a speaker showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines shown are included for the purpose of illustrating portions of the speaker that form no part of the claimed design. 

CLAIM The ornamental design for a speaker, as shown and described. 